Picture screen



'A Juile 51'1928. l 1,672,656

A. PAYNE l PICTURE SCREEN File@ Sept. 25, 1924 85,862, led February 4,1926, I have1dis` Patented Jane 5,1928.

. ARTHUR PAYNE, or KEW GARDENS, NEW Yonx, AssreNon 'ro rms-Lux D PICTURE SCREEN CORPORATION, A CORPORATION OF DELAWARE.

PICTURE SCREEN.

.Application mea sepuinber as, 1924. serial no. 739,892,l

.This invention relates to translucent exhi;J

' bition screens for projection machines, and more. particularly to screens for use in microscopic work which require clear details.

5 The invention consists in combining a film of moldable gelatinous. or gummy' material with av fabric to form the thin sheet of a screen of this character which serves as a medium for showing a projected picture with unusual sharpness and without distortion.`

An object is to provide a translucent Hexible screen comprising a fine crinkly fabric i evenly secured vto one side of the non-fibrous molded sheet. y l

Other features and advantages will hereinafter appear.

In the drawings, Figure 1 is a perspective view, partly in sectionof the molding table 'and frame showing .the method of stretching the fabric evenly over the vmolded film.

Figure 2 is a view corresponding to a transverse section of the table showing the frame in raised positions over the latter.

Figure 3 is a/diag'rammatic, fragmentary. sectional view of the screen showing fabric vsecured to'tliemolded film.

Figure 4 is a perspective viewof a finished screen, the cross lines indicating the crinkly f0 fabric and.. the middle section the adhering `ffilm.

Figure 5 is an enlarged fragmentary view of a portion of Figure 2 showing the side strips for confining the moldable material. In my co-pending application, Serial No.

closed a process whereby 'such an improved screen is formed, in which a molding table lO-may havesupportin'glegs 11 and a metallic top 12, per, iron, steel, suitable forgiving a smooth molding surface. Top 12 is heated, preferably bysteam, hot vv-ater, electricity,` or like easily controlled' means from a source situated at 13 underneath top 12. Side strips or guides14 ma to gxtendi'completely around the edges'thereof to vform with said top 12 a receiver or moldfor shaping a plastic material 15, vfto beused in making the screen.

The material 15 may be -of a composition 'as disclosed in Patent #1,151,502, datedAuf hereinafter, although sential.

VThe crinkly surface structureof the crepe t j.; i

composed of aluminum, copf etc., or other like-material,

'desired size and thickness. Which is firmly stretched on and -secured to 100 frameA 16 isvthen lowered. 'over the top 12 be secured v.to the upper side of top 12 1915, or any other similar composiaidmat'erial 15 .when first prepared and still in heated condition -is plastic and may be molded into a relative thin sheet that' on coolingbecomes a translucent, exible film and having other desirable .properties for service as screensof the character described.

A frame 16 having an opening therein substantially of the same-sha e and larger than top 12 'may have weights 1 mounted thereon togive Isuiiicient stretch to a fabric 18 incorporated in the screen as will begexplained the weights are not es- The fabric 18 is preferably of a silk crinkly'constitution. Geor ette crepe of 8 4 mesh treated to remove a gums and resins (boiled olf) has been found to give most satisfactory results for the purpose.

provides a-n improved difusor for the lig which results in a clear-cut, non-distorted picture as viewed fromeither side of the Screen. Any other fabric may be used in place ofthe material just described, so long as it has the requisite light diffusing'q'ualimon to crepe, but I do not desire'to be limited to such materials. Fabric 18 is secured to the under side of frame 16 'as shown in Figures 2 and 4.

In carrying out the process of forming the i screen, the table top 12 is heated to the proper temperature to keep Athe moldable material- 15 in plastic condition. 'Ihe'mate rial l5 may then be poured on to top 12 and spread thereon until the portion between'the guides 14 is entirely fille and the upper surface of the materlal 15 reaches slightly above the guides 14 as shown in Figure 5f Any surplus material may then be struck off with of the guides 14. The material* 15 then is inform of a thin film of substantially the The fabric 18' from the position shown in Figure 2 to that shown in Figure 1. The material is kept in its plastic state by means of the heated table top 12 until the fabric 1 8 is thoroughly im- 105 pregnated with the materiahthis actiontak-v ing place 1n the manner set forth in my coi SerialA No. 85,862, filed pending application,

by -any other suitable February 4, 1926, or

.method The fabric'is embedded in the 1 10 a straightA edge moved over the top edges 'iti plastic material to the extent that it is thor' oughly impregnated therewith, but the'fabf ric isnot covered on both sides by the plastic material. It is impregnated therewith but the fabric forms one surface on the screen.l rlhe base of the screen isfurnished by the body of gelatinous'material and then one surface of the screen is formed by the fabric as outlined above.' This surface acts as a diiusor and to some extent -asa reinforcing means.' lts principal function', howover, is to a'ct as a diusor. The' overhanging portions ofthe fabric or flaps 18a ad-` jacent the side of frame 16 form a border suitable for mounting the screen sheet in an' exhibition frame. Although the formation'of a rectangular screen is shown in the drawing it is obvious that any other'shape may be likewise .con-

ructed. As is .well-known in the art the crinkly .condition of crepe is caused largely by' the irregular Weave with which it is l. A screen of the character describedcomprising a crinlrly fabric, and a body of moldable, translucent substance secured thereon, said fabric acting as a diffuser to give sharp` and undistorted pictures.

2. .A screen of the character described consisting of a thin film of lenible, translucent material molded on to an evenly stretched relatively line-mesh, crepe fabric,

said fabric being embedded into the surface of the film to form .a single sheet with the lm, said fabric acting as a diilusor to give sharp and undistorted pictures.

3. A screen of the character described comprising an-evenlv, stretched, relatively ne-mesh crepe fabric secured to a film of flexible translucent substance, `jsaid fabric acting as a difiusor to give sharp andundistorted pictures.

4. A screenof the n' character described consisting of'a body of gelatinous,'translu cent material having smooth, plane surfaces.

and a fabric' embedded in a'surface thereof to Vact as a diffusion medium for thescreen and vfor strengthening the screen.

5. A screen o f the character described `consisting of a translucent {ilni having flat re'raeee comprising a4 crinkly fabric an'd a gelatinous translucent substance molded thereon, said fabric acting as a didusorto give sharp and' undistorted pictures, saidsubstance having its exlposed surface formed .flat and smooth. 6. screen of the character v describe comprising anevenly stretched, relatively line mesh crepe fabric securedto one side of a smooth surfaced* film of flexible translucent substance, said fabric acting as a' diffusor to give sharp and undistorted pictures.

7, A4 screenv of -the character'described surfaces, and a stretched fabric ofcrepe texture adheringly secured on asurface of the film to form a single sheet, said fabric acting as a ditusor to 'give' sharpand undistorted pictures.'

-8. A screen of the character describedl comprising a body of a translucent substance having incorporated therein as'heet of fabric from which the gum or resinous material A has been removed. r

9. A screen vof the character described comprising a base formed of a translucent gelatinous material having a fabric on' one surface thereof, said fabricefo'rming a surface of the screen andl' being impregnated by the-'gelatinous material of the base.

10. A screen of the character described comprising a base formed 'of a translucent gelatinous material having a fabric on one surface thereof, said fabric forming a surface of the screen and being impregnated by the gelatinous material of the base, and said fabric. having thegum or resinous material removed therefrom.

11. A screen of y'theharacter described consisting of a base of translucent gelatinous material, one surface vof the screen being formed' of a light diffusing fabric, united to the base'by the material thereof, and said fabric having the gum or resinous material removedftherefr'om. s

12. A 7screen of the character described comprising a base of translucent material having incorporatedtherein a fabric of'irregular weave.

' 13.' A screen of' the character described 'N5 comprising a basev of translucent material having incorporated in one face thereof a fabricof irregular weavel In testimony whereof, I',ARTHUR PAYNE, have signed my this fifteenth day of September 1924.

- ARTHURPAYNE.

name to this specification, M0 

